| /* Copyright (C) 1991, 92, 93, 94, 95, 97, 2002 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <hurd.h> |
| #include <hurd/port.h> |
| |
| /* Get the process group ID of process PID. */ |
| int |
| __getpgid (pid) |
| pid_t pid; |
| { |
| error_t err; |
| pid_t pgrp; |
| |
| if (pid == 0) |
| { |
| /* Assume atomic word fetch and store, so don't lock _hurd_pid_lock. */ |
| pgrp = _hurd_pgrp; |
| err = 0; |
| } |
| else |
| err = __USEPORT (PROC, __proc_getpgrp (port, pid, &pgrp)); |
| |
| return err ? __hurd_fail (err) : pgrp; |
| } |
| libc_hidden_def (__getpgid) |
| weak_alias (__getpgid, getpgid) |
